INTANGIBLE ASSETS (Changes in Carrying Amount of Goodwill, by Segment) (Detail) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended		12 Months Ended
	Jun. 30, 2016	Mar. 31, 2017	Mar. 31, 2016	Jun. 30, 2015
Goodwill [Line Items]
Goodwill beginning balance	$ 565,012	$ 588,007	$ 552,329	$ 519,879
Purchase Accounting Adjustments		(3,122)	4,575
Acquisitions	7,761	274,620	108,246	55,915
Impairments	(5,811)		(92,973)
Foreign exchange rate changes	21,045	1,496	(7,165)	(23,465)
Goodwill ending balance	588,007	861,001	565,012	552,329
Medical And Healthcare [Member]
Goodwill [Line Items]
Goodwill beginning balance	310,210	310,210	310,210	310,210
Purchase Accounting Adjustments		0	0
Acquisitions	0	0	0	0
Impairments	0		0
Foreign exchange rate changes	0	0	0	0
Goodwill ending balance	310,210	310,210	310,210	310,210
Professional Education [Member]
Goodwill [Line Items]
Goodwill beginning balance	32,386	32,043	32,797	33,217
Purchase Accounting Adjustments		0	0
Acquisitions	0	274,620	0	0
Impairments	0		0
Foreign exchange rate changes	(343)	(219)	(411)	(420)
Goodwill ending balance	32,043	306,444	32,386	32,797
Technology And Business [Member]
Goodwill [Line Items]
Goodwill beginning balance	194,409	223,558	88,342	55,472
Purchase Accounting Adjustments		(3,122)	4,575
Acquisitions	7,761	0	108,246	55,915
Impairments	0		0
Foreign exchange rate changes	21,388	1,715	(6,754)	(23,045)
Goodwill ending balance	223,558	222,151	194,409	88,342
U.S. Traditional Postsecondary [Member]
Goodwill [Line Items]
Goodwill beginning balance	207,913	207,913	207,913	207,913
Purchase Accounting Adjustments		0	0
Acquisitions	0	0	0	0
Impairments	0		0
Foreign exchange rate changes	0	0	0	0
Goodwill ending balance	207,913	207,913	207,913	207,913
Accumulated Impairment Losses beginning balance	(179,906)	(185,717)	(86,933)	(86,933)
Purchase Accounting Adjustments		0	0
Acquisitions	0	0	0	0
Impairments	(5,811)		(92,973)
Foreign exchange rate changes	0	0	0	0
Accumulated Impairment Losses ending balance	$ (185,717)	$ (185,717)	$ (179,906)	$ (86,933)